如何编写连接到本地文件以发送和接收数据包的客户端套接字流

如何在Java中的本地文件系统客户端上编写此套接字流？如何编写连接到本地文件以发送和接收数据包的客户端套接字流

Python的工作原理：

# Echo server program 
import socket,os 

s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) 
try: 
    os.remove("/tmp/socketname") 
except OSError: 
    pass 
s.bind("/tmp/socketname") 
s.listen(1) 
conn, addr = s.accept() 
while 1: 
    data = conn.recv(1024) 
    if not data: break 
    conn.send(data) 
conn.close() 


# Echo client program 
import socket 
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) 
s.connect("/tmp/socketname") 
s.send('Hello, world') 
data = s.recv(1024) 
s.close() 
print 'Received', repr(data)

的Java：

/* Client: how do you mention the /tmp/socketname? */ 
    public static String localsendTCPBytes(String bytes) throws IOException { 
    String downloaded = null; 
    Socket socket = new Socket("localhost", 58888); 
    DataOutputStream upload = new DataOutputStream(socket.getOutputStream()); 
    BufferedReader download = new BufferedReader(new InputStreamReader(socket.getInputStream())); 

    String caps = bytes; 
    upload.writeBytes(caps); 
    upload.flush(); 
    String get; 
    downloaded = download.readLine(); 
    System.out.println("[TCP]: downloading: " + downloaded); 
    socket.close(); 
    return downloaded; 
    }

追问：

1）进口罐子，重视项目：

JUnixsocket - download JAR

2）UNITEST Java客户端代码

import java.io.File; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import org.newsclub.net.unix.AFUNIXSocket; 
import org.newsclub.net.unix.AFUNIXSocketAddress; 
import org.newsclub.net.unix.AFUNIXSocketException; 

public class SimpleTestClient { 
    public static void main(String[] args) throws IOException { 
    final File socketFile = new File("/tmp/socketname"); 
    AFUNIXSocket sock = AFUNIXSocket.newInstance(); 
    try { 
     sock.connect(new AFUNIXSocketAddress(socketFile)); 
    } catch (AFUNIXSocketException e) { 
     System.out.println("Cannot connect to server. Have you started it?"); 
     System.out.flush(); 
     throw e; 
    } 
    System.out.println("Connected"); 
    InputStream is = sock.getInputStream(); 
    OutputStream os = sock.getOutputStream(); 
    byte[] buf = new byte[128]; 
    int read = is.read(buf); 
    System.out.println("Server says: " + new String(buf, 0, read)); 
    System.out.println("Replying to server..."); 
    os.write("Hello Server".getBytes()); 
    os.flush(); 
    os.close(); 
    is.close(); 
    sock.close(); 
    System.out.println("End of communication."); 
    } 
}

3）构建/编译问题：

java.lang.UnsatisfiedLinkError: Could not load junixsocket library, tried [/opt/newsclub/lib-native/libjunixsocket-linux-1.6-amd64.so, /opt/newsclub/lib-native/libjunixsocket-linux-1.5-amd64.so, lib:junixsocket-linux-1.6-amd64, lib:junixsocket-linux-1.5-amd64]; please define system property org.newsclub.net.unix.library.path 
    at org.newsclub.net.unix.NativeUnixSocket.load(NativeUnixSocket.java:95) 
    at org.newsclub.net.unix.NativeUnixSocket.<clinit>(NativeUnixSocket.java:105) 
    at org.newsclub.net.unix.AFUNIXSocket.<init>(AFUNIXSocket.java:36) 
    at org.newsclub.net.unix.AFUNIXSocket.newInstance(AFUNIXSocket.java:50) 
    at unixdomainsocket.SimpleTestClient.main(SimpleTestClient.java:26) 
Caused by: java.lang.UnsatisfiedLinkError: no junixsocket-linux-1.5-amd64 in java.library.path 
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681) 
    at java.lang.Runtime.loadLibrary0(Runtime.java:840) 
    at java.lang.System.loadLibrary(System.java:1047) 
    at org.newsclub.net.unix.NativeUnixSocket.load(NativeUnixSocket.java:77) 
    ... 4 more 
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.newsclub.net.unix.NativeUnixSocket 
    at org.newsclub.net.unix.AFUNIXSocketImpl.connect(AFUNIXSocketImpl.java:125) 
    at org.newsclub.net.unix.AFUNIXSocket.connect(AFUNIXSocket.java:97) 
    at org.newsclub.net.unix.AFUNIXSocket.connect(AFUNIXSocket.java:87) 
    at unixdomainsocket.SimpleTestClient.main(SimpleTestClient.java:28) 
Java Result: 1

4）解决方案：

-Djava.library.path=/usr/lib/jni -Djava.library.path=/usr/lib/rxtx -Djava.security.policy=applet.policy -Djava.library.path=/var/tmp/screwyou/jar/lib-native

作品！

来源

2013-01-21 YumYumYum

是[this]（http://stackoverflow.com/questions/170600/unix-socket-implementation-for-java）不相关？ – Logan